jewels_and_stones

  • 2022-12-14
  • 浏览 (502)

jewels_and_stones.py 源码

# 宝石与石头

class Solution:

    # 使用一个哈希表
    def numJewelsInStones_1(self, J: str, S: str) -> int:
        s, res = set(J), 0
        for c in S:
            if c in s:
                res += 1
        return res

    # 另一种写法
    def numJewelsInStones_2(self, J: str, S: str) -> int:
        s = set(J)
        return sum(c in s for c in S)

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